Home / 1,748.39-2,622.57-515.79

Finding the Fourth Proportional to 1,748.39, 2,622.57 and 515.79

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Solution

The fourth proportional to 1,748.39, 2,622.57 and 515.79 is: 773.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,748.39 : 2,622.57 = 515.79 : x
  2. Step 2: Convert to fraction form
    1,748.39/2,622.57 = 515.79/x
  3. Step 3: Cross multiply
    1,748.39x = 2,622.57 × 515.79
  4. Step 4: Simplify right side
    1,748.39x = 1,352,695.38
  5. Step 5: Solve for x
    x = 1,352,695.38/1,748.39
  6. Step 6: Final answer
    x = 773.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.